Diabetes Care:rs7903146 突变可增加肥胖青少年IGT/T2D的发生风险

2017-08-05 MedSci MedSci原创

本研究旨在探讨TCF7L2 rs7903146的风险等位基因使得肥胖青少年糖耐量受损(IGT)或2型糖尿病(T2DM)发生的机制。研究共纳入了955名TCF7L2基因内rs7903146突变的青少年。所有受试者均使用口服最小模型进行口服葡萄糖耐量试验以评估其胰岛素分泌的使用,33名受试者行高胰岛素-正葡萄糖钳夹技术。在307名受试者中,随访3.11~2.36年后重复进行口服葡萄糖耐量试验。结果显示

本研究旨在探讨TCF7L2 rs7903146的风险等位基因使得肥胖青少年糖耐量受损(IGT)或2型糖尿病(T2DM)发生的机制。

研究共纳入了955名TCF7L2基因内rs7903146突变的青少年。所有受试者均使用口服最小模型进行口服葡萄糖耐量试验以评估其胰岛素分泌的使用,33名受试者行高胰岛素-正葡萄糖钳夹技术。在307名受试者中,随访3.11~2.36年后重复进行口服葡萄糖耐量试验。

结果显示,白种人(P = 0.006)和非裔美国人(P = 0.009)中TCF7L2 rs7903146风险等位基因与2小时血糖水平较高相关,在西班牙人队列中也可发现类似的趋势(P = 0.072)。此外,T等位基因与β细胞应答率减低及IGT有关(p<0.05)。风险变异的受试者中,抑制内源性肝葡萄糖生成率较低(P=0.006)。最后,随访期间发现在携带等位基因的受试者IGT/T2D的几率较高(OR 2.224;95% CI 1.370–3.612;P = 0.0012)。

总之,该研究发现,TCF7L2基因中rs7903146变异可通过损伤β细胞功能来增加肥胖青少年IGT/T2D的发生风险,而且肝脏胰岛素敏感性可预测随着时间的推移IGT/T2D的发展。

原始出处:

Catrina Cropano, Nicola Santoro, et al., The rs7903146 Variant in the TCF7L2 Gene Increases the Risk of Prediabetes/Type 2 Diabetes in Obese Adolescents by Impairing β-Cell Function and Hepatic Insulin Sensitivity. Diabetes Care 2017 Aug; 40(8): 1082-1089.

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    2017-08-06 130****4638

    学习了谢谢分享

    0

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    2017-08-05 执着追梦

    学习,谢谢分享

    0

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